Just to clarify something, even before the sticks break that does not mean they are still fit to use. After a while the head of the stick begins to chip and at that point the stick is not good for drum heads. So those of you who have used sticks for 5 years or more may want to check on them.

Sticks also tend to get worn out and lose their "bounce", so to speak. After a while, they just don't feel as good anymore even if there's almost no visible wear on them.